/* 背景图片 */
header {
    position: fixed;
    top: 0px;
    width: 100%;
    height: 72px;
    z-index: 2;
    background: #ECF1FD;
    box-shadow: 0px 5px 16px 0px rgba(6, 38, 109, 0.14);
}

.nav-home {
    height: 72px;
}

.logo {
    float: left;
    width: 172px;
    height: 40px;
    margin-top: 15px;
    margin-right: 70px;
}

.logo img {
    width: 172px;
    height: 40px;
}

.nav-top {
    float: left;
    display: flex;
    height: 72px;
}

.nav-top ul {
    display: flex;
    align-items: center;
    height: 72px;
}

.nav-top ul li {
    float: left;
    font-size: 16px;
    margin-right: 40px;
    color: #020814;
}

.nav-top ul li a {
    color: #020814;
}

.trial {
    float: right;
    width: 152px;
    height: 72px;
    background: linear-gradient(115deg, #73aaff 0%, #0053ff 100%);
    font-size: 16px;
    color: #FFFFFF;
    line-height: 72px;
    text-align: center;
    cursor: pointer;
}
.center{
    width: 1280px;
    margin: 0 auto;
}
/*背景图*/
.anli_img{
    margin-top: 72px;
    width: 100%;
    height: 340px;
    background-image: url(../imgs/anli/背景.png);
    background-repeat: no-repeat;
    position: relative;
}
.anli_c{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.anli_c div:nth-child(1){
    font-size: 36px;
    font-family: PingFangSC, PingFangSC-Semibold;
    font-weight: 600;
}
.anli_c div:nth-child(2) {
    font-size: 16px;
    font-family: PingFangSC, PingFangSC-Regular;
    font-weight: 400;
    margin-top: 10px;
}
.anli_c div:nth-child(3) {
    width: 120px;
    height: 36px;
    line-height: 32px;
    text-align: center;
    border: 1px solid #1872ed;
    border-radius: 19px;
    color: #1872ed;
    margin-top: 10px;
}
/*底部定制*/
.dingzhi {
    width: 100%;
    height: 340px;
    background-image: url(../imgs/Product/free.png);
    background-repeat: no-repeat;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.dingzhi_txt span {
    display: block;
    text-align: center;
    /* padding-top: 50px; */
    height: 60px;
    font-size: 36px;
    font-weight: 600;
    color: #020814;
    line-height: 60px;
}

.dingzhi_txt a {
    display: block;
    margin: 0 auto;
    margin-top: 30px;
    text-align: center;
    width: 148px;
    height: 44px;
    line-height: 44px;
    background: #1872ED;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 400;
    color: #fff;
}
/* .bg {
    height: 300px;
    background: url(../img/产品案例@2x.png) no-repeat center center;
    z-index: -1;
} */

.tit_first,
.tit_second span {
    float: left;
    width: 100%;
    height: 50px;
    font-size: 36px;
    font-weight: 600;
    text-align: center;
    color: #202020;
    line-height: 50px;
    margin-top: 40px;
}


/* 第一部分 */

.first {
    width: 100%;
    height: 838px;
    background-color: #F3F6F9;
}

.first_dist {
    float: left;
    width: 100%;
}

.box {
    float: left;
    width: 360px;
    height: 294px;
    margin: 40px 20px 0 20px;
    border-radius: 4px;
    background-color: #ffffff;
}

.logo_top {
    float: left;
    width: 300px;
    height: 74px;
    margin: 30px 30px 0 30px;
}

.logo_top img {
    float: left;
    width: 300px;
    height: 74px;
}

.con p {
    float: left;
    width: 300px;
    height: 112px;
    font-size: 16px;
    font-family: PingFangSC, PingFangSC-Regular;
    font-weight: 400;
    text-align: justify;
    color: #202020;
    line-height: 28px;
    margin-top: 15px;
    margin-left: 30px;
}

.con_bottom a {
    float: left;
    height: 28px;
    font-size: 16px;
    font-family: PingFangSC, PingFangSC-Regular;
    font-weight: 400;
    text-align: justify;
    color: #1872ED;
    line-height: 28px;
    margin-top: 20px;
    margin-left: 30px;
}


/* 第二部分 */

.second {
    width: 100%;
    height: 552px;
    background-color: #ffffff;
}

.pic_logo {
    float: left;
}

.pic_logo img {
    float: left;
    width: 1082px;
    height: 324px;
    margin-top: 40px;
    margin-left: 30px;
}


/* 第三部分 */

.third {
    width: 100%;
    height: 240px;
    background:linear-gradient(137deg,#73aaff 5%, #0053FF 93%);
}

.tit_third {
    float: left;
    width: 100%;
}

.tit_third span {
    float: left;
    height: 60px;
    font-size: 36px;
    font-weight: 600;
    color: #ffffff;
    line-height: 60px;
    margin-top: 50px;
    margin-left: 312px;
}

.third_bottom {
    float: left;
    width: 148px;
    height: 44px;
    line-height: 44px;
    margin-top: 30px;
    margin-left: 526px;
    background: #ffffff;
    border-radius: 4px;
}

.third_bottom a {
    float: left;
    width: 96px;
    height: 22px;
    margin-left: 26px;
    font-size: 16px;
    font-family: PingFangSC, PingFangSC-Regular;
    font-weight: 400;
    text-align: center;
    color: #1872ED;
}